Thats the cutters ,while i agree they are crudely built,the breaker is now looser so no need for pushing it down,and in all my years tiling i have never seen a manual cutter scribe and snap a granite tile this one did.
I've got a TX700 you can borrow, I'm junction 16 on the M6. I've finished work now, getting married next weekend then of on honeymoon for 2 weeks. It's all yours if you want it. Need it back by 23rd July as got a car showroom to do then.